Sir George Foster Pearce KCVO (14 January 1870 – 24 June 1952) was an Australian politician who served as a Senator for Western Australia from 1901 to 1938.
He began his career in the Labor Party but later joined the National Labor Party, the Nationalist Party, and the United Australia Party; he served as a cabinet minister under prime ministers from all four parties.
Pearce was born in Mount Barker, South Australia.
He left school at the age of 11 and trained as a carpenter, later moving to Western Australia and becoming involved in the union movement.
He helped establish the Labor Party there, and in 1901 – aged 31 – was elected to the new federal parliament.
Pearce was elevated to cabinet in 1908, under Andrew Fisher, and served in each of Fisher's three governments.
He continued on in cabinet when Billy Hughes became prime minister in 1915, and after the Labor Party split of 1916 followed Hughes to the National Labor Party and then to the Nationalists.
Pearce also served in cabinet under Stanley Bruce and, after joining the UAP in 1931, Joseph Lyons.
He was perhaps best known for his service as Minister for Defence, holding that position from 1908 to 1909, 1910 to 1913, 1914 to 1921, and 1932 to 1934.
His 24 years in cabinet and 37 years as a senator are both records.